Festo H-1/2-B, Threaded Non-Return Valve

The Festo H-1/2-B is a threaded non-return valve used in pneumatic systems to control airflow in one direction only. It allows compressed air to pass freely in one direction while blocking reverse flow. This helps protect components, maintain pressure, and prevent unwanted backflow in air lines. With a max operating pressure of 12bar, it fits standard industrial pneumatic setups.

How It Benefits Users

Once installed, the valve opens automatically when air flows in the permitted direction. If pressure tries to move back the other way, the valve closes and stops it. This simple function helps keep actuators, cylinders, and air circuits working as intended.

• Allows airflow in one direction.
• Blocks reverse air movement.
• Helps maintain system pressure.
• Reduces risk of backflow damage.

Design and Connection

The H-1/2-B features a threaded body designed for straightforward installation into pneumatic lines. The solid construction supports repeated pressure cycles and continuous operation in industrial environments. Its compact form makes it effortless to integrate into existing systems without changing layouts or adding extra fittings.

Usage Scenarios of the Festo 12bar Threaded Non-Return Valve

It is often installed close to actuators or air sources to keep airflow moving in the correct direction.

• Pneumatic control circuits
• Air supply lines for cylinders
• Automation and assembly equipment
• Industrial machinery using compressed air

For more information please check the datasheets.